The morpheme -gnosis is best defined as:

• A. Knowledge
• B. Written, recording
• C. Tongue
• D. Glucose

Answer: (A)

The morpheme -gnosis denotes knowledge or knowing. In medical terms, endings like -gnosis indicate a process of recognizing or identifying something based on knowledge. That’s why diagnosis means identifying a disease through knowledge of signs and symptoms, and prognosis refers to the anticipated course of a disease based on what is known about similar cases.

This doesn’t fit with written or recording, which would use a form like -graphy or -gram; it isn’t related to tongue, which would use a root like gloss- or glossa-; and it isn’t related to glucose, where the ending -ose marks a sugar rather than knowledge.